Windows Defender Not Responding Fix 2026
## Direct Answer
If Windows Defender is not responding, try restarting the Windows Defender Service or resetting Windows Defender to its default settings. You can also try updating Windows and Windows Defender to the latest version, or performing a clean boot to isolate the issue.
## Step-by-Step Guide
To fix Windows Defender not responding, follow these steps:
1. **Restart the Windows Defender Service**: Press the Windows key + R, type `services.msc`, and press Enter. Look for the Windows Defender Service, right-click on it, and select Restart.
2. **Reset Windows Defender**: Go to Settings > Update & Security > Windows Security > Virus & threat protection > Manage settings. Scroll down and click on “Reset to defaults”.
3. **Update Windows and Windows Defender**: Go to Settings > Update & Security > Windows Update, and click on “Check for updates”. Install any available updates for Windows and Windows Defender.
4. **Perform a Clean Boot**: Press the Windows key + R, type `msconfig`, and press Enter. Select the “Services” tab, check the box next to “Hide all Microsoft services”, and click on “Disable all”. Then, go to the “Startup” tab and click on “Open Task Manager”. Disable any unnecessary startup programs.
5. **Run the System File Checker**: Press the Windows key + X, select Command Prompt (Admin), and type `sfc /scannow`. This will scan and replace any corrupted system files.
## FAQ
* **Q: Why is Windows Defender not responding?**
A: Windows Defender may not respond due to corrupted files, outdated software, or conflicts with other security programs.
* **Q: Will resetting Windows Defender delete my settings?**
A: Yes, resetting Windows Defender will delete your custom settings and restore the default settings.
* **Q: Can I use another antivirus program with Windows Defender?**
A: Yes, you can use another antivirus program with Windows Defender, but it’s recommended to use only one antivirus program to avoid conflicts.
* **Q: How often should I update Windows Defender?**
A: You should update Windows Defender regularly, as new updates often include bug fixes and improved security features.
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